Door closure



T. BRA-DY noon CLOSURE A ril 19, 1927.

Original Filed Feb. 15. 1923 2 Sheets-Sheet 2 3 Anonuzvs g INVENTOR fiwzmszra Q Z 75 7.5 C

ka jhk Patented Apr. 19, 1927.

UNKTED STATES PATENT ()FFI'CE.

THOMAS BRADY, OF EAST ORANGE, NEW JERSEEJY; ASSIGNOR, BY M'ESNE ASS-IGN- MENTS, TO OTIS ELEVATOR COMPANY, OF NEVI YORK,

NEW J EESEY.

N. Y., A COEPORATION OF DOOR CLOSURE.

Original application filed. February 15, 1923, Serial No. 619,231. Divided and this application filed October This invention relates to door closures and, particularly, to closures such as are used for elevator hatchway doors.

This application is a division of application Serial No. 619,231, filed February 15, 1923.

It is common practice at the present time to manufacture door closures of different sizes to fit the various sizes of doors. This practice involves expense since it necessitates carrying in stock several sizes of links and Operating parts. Furthermore, it often happens that on installation further fitting and adjusting is necessary and this still further increases the cost of the installation.

This invention has for its object to provide a standard closure device so constructed and arranged that it can be readily adjusted and effectively used with a plurality of different sizes of door installations.

Another object of the invention is to provide a door closure so constructed as to be capable of adjustment in a mannerto properly aline the operating links so as to reduce to a minimum the friction between the coacting' parts.

Another object of the invention is to provide a device of the character described that is simple in construction, efficient in operation and inexpensive to manufacture.

Further objects of the invention will appear from the following specification taken in connection with the drawings, which form a part of this application, and in which- Fig. 1 is an elevational view of a door installation showing operating and checking mechanism constructed in accordance with the invention.

F ig.. 2 is a transverse sectionalview taken substantially on line 2-2 of Fig. 1.

Fig. 3 is a sectional elevation similar to Fig. 2, but showing the door section in open position.

Fig. 4 is a detail elevational View on an enlarged scale showing the pivotal connec tion between one of the operating links and one of the door sections.

Fig. 5 is an elevational view taken at right angles to Fig. 4. N Fig. 6 is an elevational view similar to Fig. A, but showing the pivotal connection between adjacent links.

Fig. 7 is a transverse sectional elevation taken substantially on line 77 of Fig. 6.

Serial No. 61,643.

Fig. 8 is an elevational view of the handle.

Fig. 9 is an end view taken at right angles to Fig. 8.

Fig. 10 is a detail sectional elevation showing the roller mounting for the door sections.

Fig. 11 is a detail sectional elevation showing the guiding means for the lower ends of the door sections.

Fig. 12 is an elevational view on an enlarged scale showing the construction of the adjustable joints between the sections of the end link which is pivoted to the fixed abutment, and

Fig. 13 is a top plan view of the construction shown in Fig. 12.

The inventionbriefiy described consists of means for operating a plurality of sliding door sections and this means comprises links pivotally connected to the door sections and to each other, one of the end links being pivoted on a fixed pivot. In order to adapt the device for use in connection with the diiferentsizes of door sections and door installations, means is provided for adjustably connecting the links to the door sections and for adjustablyconnecting thelinks to each other. The end link which is connected to a fixed pivot is made sectional and the sections are adjustably connected so that the links may be properly alined with reference to the doors, as, in order to avoid undue friction, the links should be disposed in planes parallel to the planes of the door sections.

In the embodiment of the invention shown the door comprises a stationary section 20 and slidable sections 21 and 22, these two latter sections being adapted to move into overlapping position with the stationary sec tion 20 as shown in Fig.

The door sections may be mounted in any desired manner and in the particular form of the invention illustrated each of the sections 21 and 22 is provided with rollers 23 mounted on a rail 24 disposed above the hatchway opening. The door sections are also guided by means of downwardly extending webs 25 (see Fig. 11) which are disposed in slots 26 formed in a plate 27 mounted at the bottom of the hatchway opening.

Operating means for the slidable door sections comprises a plurality of links A,

B and (l. The link A is adjustably mounted in a clamp 30 which is pivoter at 31 on a plate 32 secured to the door section 22. The construction of the clamp 30 is illustrated in detail in Figs. and 5 and from these figures it will be seen that the clamp comprises parallel plates 83 and 3d adapted to receive between them the end portion of the link A and when this link has been properly adjusted in the clamp, the clamp is tightened by means of screws 35. A lug 36 extends upwardly from the clamp and is pivoted as before stated at 31 to the plate 32.

The link A is pivotally connected to the link 13 through an adjustable clamp 40 illus trated in detail in 6 and 7. This clamp comprises parallel plates all and 42 adapted to receive between them one end portion of the link B and screws li-3 secure this link. portion in its adjusted position. The clamp i0 is connected by a pivot pin 4.4- .to the link A.

The link B is pivotally connected intermediate its ends to the door section 21 in the following manner. A bracket 50 is preferably adjustably secured to one side edge oi the section 21, this bracket having a plate 51 formed thereon. The link ll is adjustably connected to the plate 51 by means of a clamp 52 exactly similar in construction to the clamp 30 already described and, there fore, the details o1 this clamp will not be specifically Xplained. The link B is pivotally connected to the tree end of the linl' C by means of a clamp 55 exactly similar in construction to the clamp etO already described.

The link C comprises a durality of sections which are designated for convenience as C, C and C The section C is pivotally mounted on a horizontal pivot formed in a bracket 61. The bracket 61 is secured to a vertically disposed plate or strip 62 secured at 63 to one side wall of the elevator hatchway.

Since dimensions vary and the construc tion of the hatchway is not uniform, it is desirable to provide means for adjustably connecting the sections C, C and C of the end link G to each other for the purpose of properly alining the links A, B and C as these links should be disposed in planes parallel to the planes ot' the door sections in order to operate eliectively and with a minin'ium amount of friction. 'lhcse adjustable connections are particularly illustrated in F 1.2 and 13 and may be described as follows. The section C of the end link has secured to one end an adjustable clamp 65 similar in construction to the clamps already described. The clamp 65, however, has formed thereon an ear 66 and the section K1) has formed on one end parallel ears 6'"! so spaced apart as to receive the car 66 as shown in Figs. 1 and 12. Each of these ears has an opening 't ornmd therethrmigh and the opening is prete ably star-shaped or pro vided with radial. notches 68. These openings are adapted to register when the cars 66 and (3'? are placed in overlapping relation and the clamp 65 is connected to the end oi the section C by means of a bolt 70. This bolt is also star-shaped in section and properly dimensioned to fit within the openings in the ears 66 and 67. The bolt' 70 has reduced threaded extensions 71 and 72 and on these extensions are mounted nuts 73. In order to adjust the sections C and C the bolt 70, which connects these parts, is re moved and the link C is properly alined who reference to the links A and B and with reference to the planes of the door sections. The section C is then angled to the desired position and the bolt 70 is inserted and thercafter the nuts are tightened securely clamping th se parts in adjusted position. A similar joint formed between the sections C and C this joint being indicated by the reference character 75 and as this joint is exactly similar to that already described, no further explanation thereof is deemed necessary.

From the foregoing description it will be seen that a wide range of adjustment between the sections C, C and C can be obtained and that these sections can be properly adjusted to aline the link C with the remaining links of the door sections.

A handle is adjustably secured to the operative links and in' the particular embodiment of the invention shown, this handle is connected to an end of the link B disposed beyond the pivotal connection between the links A and B. The construction of this handle is particularly illustrated in Figs. 8 and 9 wherein it will be seen that the handle comprises parallel plates 81 and 82 which receive between them the end of the link B. Screws 83 are provided for clamping these plates to the link. A hand grip or extension 84 is formed on the plate 81. It will, of course, be understood that if the operator desires the handle can be secured to the links in another position. as, for instance. to the link B on the opposite side ot' the pivotal connection between the links A and B. The POE. on of the handle will be determined by the size and reach of the operator.

The actuating and cushioning mechanism for the door closure need not be described in detail since this mechanism forms the subject matter of application, Serial No. 619,231, of which this application is a division. Briefly, the mechanism comprises a rod adjustably connecied by a socket 91 threaded to the upper end of the rod to an extension 92 formed on the section C of the link C. The socket '91 is pivoted at 93 to the extension 92. V

The. rod $0 extends downwardly into a cylinder 94, the lower end of which is closed by a plug 95 and this plug is pivoted at 96 on a bracket 97 secured to the strip 62.

The door closure mechanism is installed and operated in the following manner. The door sections are first moved to the closed position shown in Fig. 1 The links A, B and C are then pivotally connected to each other and pivoted to the door sections in such a position that they will be properly alined with reference to each other and to the door sections. The sections of the link C, namely, C, C and C are then relatively adjusted with reference to each other and pivotally connected at 60 to the bracket 61 in such a manner that the links A, B and C will be disposed parallel to each other and to the door sections. The operating and cushioning means is then secured to the section C of'the link C at the pivot point 93 and the opposite end of this means is pivoted at 96 to the bracket 97. Before the ends of the actuating and cushioning means are connected to the extension 92 and bracket 97 respectively, the socket 91 will be adjusted to properly position the rod 90. When these parts have been adjusted in the manner described and the handle 80 has been mounted in the desired position on the links, the mechanism may be operated as follows.

Assuming that the doors are in closed position, the operator will pull downwardly on the handle 80 thereby causing the door sections 21 and 22 to slide to the position shown in Fig. 3 and the links A, B and C will take the positions shown by the dotted lines in Fig. 1. As the link C is swung upwardly, the extension 92 on the section 0 of the link will move from the position shown in full lines in Fig. 1 to the dotted line position or approximately at right angles to its initial position. This will cause the rod 90 to be pulled out of the cylinder 94:, thus bringing 1nto operation spring return mechanism and cushioning means described and claimed in the copending application above referred to.

From the foregoing description it will be seen that simple, practical and effective means has been designed for accomplishing the objects of the invention. By means of the various adjustments a standard outfit can be manufactured and applied to doors of various sizes and dimensions. Furthermore, the adjustments described permit the accurate mounting of the device when installed and facilitate the proper alinement and thereby eliminate all unnecessary friction.

Although the door illustrated in thedrawings has two sliding sections, it will be understood that, if desired, a single sliding section or more than two sliding sections may be used, without change in the operating mechanism, except as to the number of links used. Although one specific embodiment of the invention has been particularly shown and described, it will be understood that the invention is capable of modification and that changes in the arrangement and in the construction of the various cooperating parts may be made without departing from the spirit or scope of the invention asexpressed in the following claims.

\Vhat I claim is:

1. Door closure mechanism for sectional doors comprising a series of links pivoted respectively to the door sections and to each other and connected at one end to a fixed pivot, the link connected to the fixed pivot comprising a plurality of relatively adjustable sections whereby the links can be adjusted toward and from the door and properly alined with reference to the door sections. I

2. Door closure mechanism for sectional doors comprising a series of links pivoted respectively to the door sections and to each other and connected at one end to a fixed pivot, the pivotal connections between the links and doors comprising clamps adjustable on said links.

8. Door closure mechanism for sectional doors comprising a series of links pivoted respectively to the door sections and to each other and connected at one end to a fixed pivot, the pivotal connections between the links and doors and between the respective links being adjustable.

4;. Door closure mechanism comprising a plurality of door sections, slidable one over the other, a link adjustably pivoted to each door section, a link pivoted on a fixed pivot, and adjustable pivotal connections between the links pivoted to the door sections and between one of said links and the link pivoted on the fixed pivot.

5. Door closure mechanism for slidable sectional doors comprising links connected to the door sections and to a link pivoted on a fixed pivot, said last named link comprising a plurality of sections relatively adjustable about axes substantially parallel to the planes of the door sections 6. Door closure mechanism for doors having a slidable section comprising a link pivoted to said section and a link pivoted to said first link and on a fixed pivot, said second link comprising a plurality of sections relatively adjustable with reference to each other and laterally with reference to the planes of the door sections.

7. Door closure mechanism for doors having a slidable section comprising a link pivoted to said section and a link pivoted to said first link and on a fixed pivot, said second link comprising a plurality of sections relatively adjustable about axes substantially parallel to the planes of the slidable sections with reference to each other.

8. Door closure mechanism comprising a slidable door section and alink adjustably pivoted to said section, and a second link adjustahly pivoted to said first link on an axis perpendicular to the plane of the door 5 section and to a fixed pivot.

9. Door closure mechanism comprising a slidable door section and a link adjustably pivoted to said section, and a second link adjustably pivoted to said first link on an axis perpendicular to the plane of the door section and to a fixed pivot, said second link comprising a plurality of relatively adjustable sections.

In witness whereof, I have hereunto set my hand this 5th day of October, 1925.

THOMAS BRADY. 

